| electromagnetic wave delay line fabricated from superconductors used for delaying signals in electronic circuits in the typical frequency range of 300 MHz to 30 GHz
Note 1 to entry: Because high-frequency loss in superconductors is very small, the superconducting microwave delay line can be fabricated with very small insertion loss. Note 2 to entry: This entry was numbered 815-16-52 in IEC 60050-815:2015.
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